Amazon had its biggest day ever on Cyber Monday By: MarketWatch November 27, 2018 at 10:14 AM EST Amazon says it had its biggest sales day on Cyber Monday, which data shows was the biggest U.S. online shopping day ever. Read More >> Related Stocks: Adobe Systems Amazon.com Online Retail Amplify ETF S&P Retail SPDR Target Corp Wal-Mart Stores, Inc.